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Materials and methods : Effect of different angulations and collar lengths of conical hybrid implant abutment on screw loosening after dynamic cyclic loading [3]

Materials and methods : Effect of different angulations and collar lengths of conical hybrid implant abutment on screw loosening after dynamic cyclic loading [3]

author: Mai Ahmed Yousry El-Sheikh, Tamer Mohamed Nasr Mostafa, Mohamed Maamoun El-Sheikh | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

Removal torque loss ratio before loading (%initial RTL)

Removal torque loss ratio after loading (%postload RTL)

Removal torque loss ratio between before and after loading (%difference between initial and postload RTL)

Student T test and ANOVA were used to compare mean of %initial and %postload RTL between different groups and subgroups followed by pair-wise Tukey’s post hoc tests at 0.05 level of significance. Differences between mean greater than Tukey post hoc value were considered significant (P < 0.05). Statistical analysis was performed by using SPSS program version 20 (SPSS 20; Inc. Chicago, USA).

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